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24%
Workshop: Getting web and mail servers ready for IPv6
30.11.2025
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»
Archive
»
2011
»
Issue 5: Pen Te...
»
the 4,
000,000,000
inhabitants of this continent who are affected by the scarcity of IPv4 addresses – and who are thus the earliest adopters of IPv6. This situation will mainly relate to your web offerings
24%
Intrusion detection with Prelude
30.11.2025
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2012
»
Issue 10: Traff...
»
in the Ubuntu 11.x and Debian 6.x package sources. You can also opt for the host-based IDS OSSEC by Trend Micro [
3
]. If the Prelude Manager is running on a remote server, the rule-based Prelude Correlator
23%
Script utilities in depth: grep, awk, and sed
30.11.2025
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2011
»
Issue 4: Secure...
»
/share/zoneinfo -type f | \ 07 grep -v 'posix|right|Etc|SystemV | \
08
grep -i $city` 09 echo -n "Time in $1: "; TZ=`echo $z` date The first section of this code ensures that the script's argument
23%
Warding off the rise of VoIP spam
30.11.2025
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2010
»
Issue 0: Active...
»
,GotoIf($["${wl}" = "1"]?found:notfound) 05 exten => _.,n(notfound),agi,captcha.sh 06 exten => _.,n,Playback(to-call-num-press) 07 exten => _.,n,SayDigits(${captcha})
08
exten => _.,n,Read(usercaptcha||
3
|1|) 09 exten
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